<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script>
			document.write(123 + "\t"+typeof(123) + '<br>');
			document.write(1.23 + '<br>');
			document.write(NaN + '<br>');

			document.write('abc' + '<br>');
			document.write("aaa" + '<br>');
			document.write("aaa" + "\t"+typeof("aaa") + '<br>');

			document.write(null + '<br>');
			document.write(null +"\t"+ typeof(null) + '<br>');
		</script>
	</head>
	<body>
	</body>
</html>
